It is a little more than that. If we accept that all life on earth came from the earth, and the earth came from the cosmos, then the next step in our genealogy chart is where the cosmos came from.
Thus far we have the option that the cosmos always existed, so no beginning. That is also the explanation for God's existence--He always was, so no beginning.
One hypothesis is that if matter always existed, but the same is not true of intelligence, how did intelligence come from matter? The second hypothesis is if it was intelligence that always existed, but not matter, then how did intelligence create matter from nothing? What is even more fun to contemplate is that if man manages to draw intelligence from a rock, is it man's intelligence that made this happen, or was it the rock?
As you might guess, I am more of the mind intelligence always was, but likely so was matter. If I have to choose one over the other, I choose intelligence. Therefore, I see God as Creator.